South Salt Lake, Utah Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
South Salt Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——88°60°—
- FridayJun 5Overcast——94°56°+6°
- SaturdayJun 6Overcast——94°71°0°
- SundayJun 7Overcast13%—81°65°-13°
- MondayJun 8Overcast——86°67°+5°
- TuesdayJun 9Overcast11%—86°60°0°
- WednesdayJun 10Drizzle26%0.06″71°58°-15°
PM2.5/PM10 ratio 0.43 with 15 mph wind — characteristic of long-range haze transport rather than a local source. AQI up 5 over the last 6 hours (gradual rise).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 55 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 55
- UV peak
- 5.4 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 55
PM × Wind × Precip
PM2.5/PM10 ratio 0.43 with 15 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.43
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:00 AM
- Moonset
- 3:31 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
South Salt Lake at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
South Salt Lake's warmest month is July (~81°F mean) and its coldest is January (~34°F). Rainfall peaks in April (2.5 inches) and bottoms out in July (0.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 34° | 1.5″ | 5 |
| February | 39° | 1.4″ | 5 |
| March | 47° | 2.0″ | 5 |
| April | 53° | 2.5″ | 6 |
| May | 62° | 2.1″ | 5 |
| June | 72° | 1.1″ | 3 |
| July | 81° | 0.6″ | 2 |
| August | 79° | 0.6″ | 2 |
| September | 69° | 1.3″ | 3 |
| October | 56° | 1.4″ | 4 |
| November | 44° | 1.6″ | 4 |
| December | 34° | 1.6″ | 5 |
Regional context
South Salt Lake sits within a cold semi-arid climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Salt Lake City, UT, Provo, UT, Ogden, UT, West Valley City, UT, Logan, UT.
Frequently asked
- When does it freeze in South Salt Lake?
- South Salt Lake's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in South Salt Lake?
- April is the wettest month with about 2.5 inches of rain on average; the city receives roughly 18 inches annually.
- What is the warmest month in South Salt Lake?
- July is typically warmest, averaging about 81°F.
- What is the coldest month in South Salt Lake?
- January is typically coldest, averaging about 34°F.
- When can I start a vegetable garden in South Salt Lake?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does South Salt Lake get?
- South Salt Lake averages about 48 rainy days per year.
- What hardiness zone is South Salt Lake?
- South Salt Lake's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
South Salt Lake, Utah sits in a cold semi-arid climate zone. January means hover near 34°F while July averages 81°F — a 47°F seasonal swing.
Across the year, South Salt Lake receives about 18 inches of precipitation spread over roughly 48 rainy days.
The rhythm of the year is set by latitude (40.7°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.